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CN
TA1905 Series Miniature Precision AC Current Transformers with Busbar Built-in
TA1905系列母线内置式小型交流电流互感器-1.gif
TA1905 Series Miniature Precision AC Current Transformers with Busbar Built-in
Features:
① The primary coil is built-in inside; being able to be directly soldered on PCB, easy to use and elegant outline.
② Compact size, completely sealed, strong mechanical and environmental endurance, strong dielectric strength, safe and reliable.
TA1905 General Technical Specifications for Standard Products:

1Features: 

The primary coil is built-in inside; being able to be directly soldered on PCB, easy to use and elegant outline.

Compact size, completely sealed, strong mechanical and environmental endurance, strong dielectric strength, safe and reliable.

 

2Ambient Conditions:

 Ambient temperature: -55℃+85℃;

 Relative humidity: ≤90% at 40℃;

 Atmospheric pressure: 8601060mbar(about 650800mmHg).

 

3Operating Frequency Range: 20Hz~1kHz

 

4Insulation Thermal ClassClass F (155℃)

 

5Safety Features:

 Insulation resistance: >1000MΩ in normal condition;

 Insulation withstand voltages: 2000V 50Hz/1 min ;

 Fire retardancy: In conformity with UL94-V0.

 

6Outline Drawing, Installation Dimension and Coil Diagram:( tolerance ± 0.5mm )

image.png

7Typical Application and Technical Parameters:

The parameters are listed in Table 1 while the sampling voltage is obtained directly by using a resistor (as shown in Fig.1 below).

The parameters are listed in Table 2 while the sampling voltage is obtained by using an IC (as shown in Fig.2 below). 

image.png

Table 1

Model

Rated Input Current

Rated Output Current

Rated Sampling Resistance

RL

Rated Sampling      Voltage

Phase Shift

Non Linearity

Linear Range

Withstand Voltage

TA1905-01

2.5A

2.5mA

200Ω

0.5V

≤60’

≤0.5%

≥2 times of the rated value

≥2KV

TA1905-02

2.5A

1.25mA

800Ω

1.0V

≤60’

TA1905-03

5A

1.67mA

900Ω

1.5V

≤50’

TA1905-04

5A

1.25mA

1600Ω

2.0V

≤50’

 

Table 2

Model

Rated Input Current

Rated Output Current

Rated Sampling Voltage

Phase Shift

Non Linearity

Linear Range

 

Withstand Voltage

TA1905-01

2.5A

2.5mA

 

≤1/2 times of IC power supply

≤30’

≤0.3%

 

≥2 times of the rated value

≥2KV

TA1905-02

2.5A

1.25mA

TA1905-03

5A

1.67mA

TA1905-04

5A

1.25mA

 

8Attention:

 Connect the primary winding of the current transformer in series with the measured current loop, and operate the secondary winding in near short-circuit mode.

 Do not allow the secondary winding of the current transformer to be open-circuited and do not install any fuse in the secondary circuit.


Application Case
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